diff --git a/mflike/Foreground.yaml b/mflike/Foreground.yaml
index d416d9f..cbe1848 100644
--- a/mflike/Foreground.yaml
+++ b/mflike/Foreground.yaml
@@ -1,13 +1,10 @@
-requested_cls: [ "tt", "te", "ee" ]
+requested_cls: ["tt", "te", "ee"]
 lmin: 2
 lmax: 6001
 # ells set automatically from above if not set directly
 ells:
-experiments: [ "LAT_93", "LAT_145", "LAT_225" ]
-bandint_freqs: [ 93.0, 145.0, 225.0 ]
-
-# path to data
-data_folder: 
+experiments: ["LAT_93", "LAT_145", "LAT_225"]
+bandint_freqs: [93.0, 145.0, 225.0]
 
 # Parameters to build a top-hat band:
 # - nsteps sets the number of frequencies used in the band integration
@@ -37,18 +34,18 @@ top_hat_band:
 # or be read from a file (either from external file with name "rootname" or from sacc)
 # - if Gaussian_beam = False/empty and beam_from_file = False/empty, it will be read from the sacc file (currently not working)
 # - if Gaussian_beam = False/empty and beam_from_file is specified, it will be read from this file
-#   the file has to be saved in the same path as the data
-#   indicate only the name, without the yaml extension and the rest of the path
+#   the file name has to be its absolute path without the yaml extension
 #   it has to be a yaml with keys = experiments and items = array((freqs, ells))
 #   i.e. numpy arrays of beam profiles for each frequency in the passband of that array
 # - If we want to compute Gaussian beams, fill the Gaussian_beam entry with dictionaries
 #   containing the parametrization for FWHM for each experiment/array in T and pol
-# - If bandpass shifts are != 0, you have to fill the Bandpass_shifted_beams key
-#   with the name of the file containing the dictionary with beam profiles for different values
-#   of Delta nu. As before, the file should be a yaml, the filename should not contain the ".yaml" 
-#   extension and should be in the same path as the data. The dictionary should contain a key for
-#   each experiment/array, and for each of these keys there should be a "nu_0", "alpha" and "beams"
-#   keys. The "beams" item would be a dictionary {"nu_0 + Delta nu": b_ell, "nu_0 + 2Delta nu": b'_ell,...}   
+# - If bandpass shifts are != 0 and you want to propagate them to the beams, you have to fill 
+#   the Bandpass_shifted_beams key with the name of the file containing the dictionary 
+#   with beam profiles for different values of Delta nu. As before, the file should be a yaml, 
+#   and you should provide its absolute path without the ".yaml" extension. 
+#   The dictionary should contain a key for each experiment/array, and for each of these keys 
+#   there should be a "nu_0", "alpha" and "beams" keys. The "beams" item would be a 
+#   dictionary {"nu_0 + Delta nu": b_ell, "nu_0 + 2Delta nu": b'_ell,...}   
 # default is the beam_profile to be a null dict and chromatic beam not 
 # taken into account
 beam_profile: